diff options
Diffstat (limited to 'app/assets/javascripts/vue_shared/components/table_pagination.js')
-rw-r--r-- | app/assets/javascripts/vue_shared/components/table_pagination.js | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/app/assets/javascripts/vue_shared/components/table_pagination.js b/app/assets/javascripts/vue_shared/components/table_pagination.js new file mode 100644 index 00000000000..8943b850a72 --- /dev/null +++ b/app/assets/javascripts/vue_shared/components/table_pagination.js @@ -0,0 +1,147 @@ +/* global Vue, gl */ +/* eslint-disable no-param-reassign, no-plusplus */ + +window.Vue = require('vue'); + +((gl) => { + const PAGINATION_UI_BUTTON_LIMIT = 4; + const UI_LIMIT = 6; + const SPREAD = '...'; + const PREV = 'Prev'; + const NEXT = 'Next'; + const FIRST = '<< First'; + const LAST = 'Last >>'; + + gl.VueGlPagination = Vue.extend({ + props: { + + // TODO: Consider refactoring in light of turbolinks removal. + + /** + This function will take the information given by the pagination component + + Here is an example `change` method: + + change(pagenum) { + gl.utils.visitUrl(`?page=${pagenum}`); + }, + */ + + change: { + type: Function, + required: true, + }, + + /** + pageInfo will come from the headers of the API call + in the `.then` clause of the VueResource API call + there should be a function that contructs the pageInfo for this component + + This is an example: + + const pageInfo = headers => ({ + perPage: +headers['X-Per-Page'], + page: +headers['X-Page'], + total: +headers['X-Total'], + totalPages: +headers['X-Total-Pages'], + nextPage: +headers['X-Next-Page'], + previousPage: +headers['X-Prev-Page'], + }); + */ + + pageInfo: { + type: Object, + required: true, + }, + }, + methods: { + changePage(e) { + const text = e.target.innerText; + const { totalPages, nextPage, previousPage } = this.pageInfo; + + switch (text) { + case SPREAD: + break; + case LAST: + this.change(totalPages); + break; + case NEXT: + this.change(nextPage); + break; + case PREV: + this.change(previousPage); + break; + case FIRST: + this.change(1); + break; + default: + this.change(+text); + break; + } + }, + }, + computed: { + prev() { + return this.pageInfo.previousPage; + }, + next() { + return this.pageInfo.nextPage; + }, + getItems() { + const total = this.pageInfo.totalPages; + const page = this.pageInfo.page; + const items = []; + + if (page > 1) items.push({ title: FIRST }); + + if (page > 1) { + items.push({ title: PREV, prev: true }); + } else { + items.push({ title: PREV, disabled: true, prev: true }); + } + + if (page > UI_LIMIT) items.push({ title: SPREAD, separator: true }); + + const start = Math.max(page - PAGINATION_UI_BUTTON_LIMIT, 1); + const end = Math.min(page + PAGINATION_UI_BUTTON_LIMIT, total); + + for (let i = start; i <= end; i++) { + const isActive = i === page; + items.push({ title: i, active: isActive, page: true }); + } + + if (total - page > PAGINATION_UI_BUTTON_LIMIT) { + items.push({ title: SPREAD, separator: true, page: true }); + } + + if (page === total) { + items.push({ title: NEXT, disabled: true, next: true }); + } else if (total - page >= 1) { + items.push({ title: NEXT, next: true }); + } + + if (total - page >= 1) items.push({ title: LAST, last: true }); + + return items; + }, + }, + template: ` + <div class="gl-pagination"> + <ul class="pagination clearfix"> + <li v-for='item in getItems' + :class='{ + page: item.page, + prev: item.prev, + next: item.next, + separator: item.separator, + active: item.active, + disabled: item.disabled + }' + > + <a @click="changePage($event)">{{item.title}}</a> + </li> + </ul> + </div> + `, + }); +})(window.gl || (window.gl = {})); |